Obstacle Detection and Identification SystemA Collision Avoidance system for Unmanned Maritime Vehicles has been designed and implemented. The proposed system employs a high definition video camera and a laser range sensor mounted on a pan and tilt device to detect obstacles in the vicinity of the ship. The reasons behind employing the pan and tilt devices are (a) to increase the coverage range and (b) to act as a stabiliser for the high definition video camera and the laser sensor mounted on it. Figure 1 shows the proposed system in operation.
Additionally, different software based subsystems have been implemented for the proposed solutions including Obstacle Detection/identification, Risk Assessment Unit and prediction subsystems. An extensive performance evaluation of the proposed system in virtual maritime environments has been conducted. Figure 2 shows the obstacle detection and identification subsystem has successfully detected the two cruisers present in the scene in real-time.
Figure 3 shows the captain radar screen. The figure illustrates this scenario in which the risk assessment unit requests the pan and tilt device to re-scan sector 2. The request can be seen at the top of the virtual map and will be highlighted for the operator.
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